Application

Softening and clarification of brackish water

Model	A, mm	B, mm	C, mm	D, mm	Weight, kg
NF 4040-F-2	1016.00	100.00	19.10	26.70	2.50
NF 4040-F	1016.00	100.00	19.10	26.70	2.50
NF 4040-F-3	1016.00	100.00	19.10	26.70	2.50

Product description

Feature	Reinforced by tape (-T)
Membrane material	Polypiperazineamide
Membrane type	НаРМ
Design	Spiral wound
Application	Softening and clarification of brackish water

Specification

Model	Flux, GPD	Rejection, %	Area		Spacer
			m2	ft2	mm	mil
NF 4040-F-2	1 800	60.00 / 99.00	7.70	83.00	0.79	31.00
NF 4040-F	2 000	60.00 / 99.00	8.00	86.00	0.71	28.00
NF 4040-F-3	1 700	60.00 / 99.00	7.40	80.00	0.86	34.00

*TEST CONDITIONS: test solution of NaCl 500 mg/l, P=0,7 , T=25 C, pH=7,5. Recovery - 15%

**TEST CONDITIONS: test solution of MgSO4 2000 mg/l, P=0,7 , T=25 C, pH=7,5. Recovery - 15%

Operating conditions and technical data for designing

Recommended operation pressure, MPa	0,6-2,0
Maximum operation pressure, MPa	2,1
Maximum pressure drop, MPa	0,1
Operation temperature, С1	4-45
рН at operation1	2-12
рН at chemical cleaning (short time operation)	2-11;1-11,5;1-12
Acceptable Hydrogen peroxide concentration during continuous operation, mg/l	40
Acceptable Hydrogen peroxide concentration during disinfection (not longer than 30 min), mg/l	1000
Acceptable free Chlorine concentration during continuous operation, mg/l	1
Acceptable free Chlorine concentration during disinfection (not longer than 30 min), mg/l	5
Concentrate/permeate ratio on each element, min	5:1
SDI (15 minutes test), max	5
Turbidity, NTU max	20
Maximum feed flow, m3/hr	3,6
Colour value, max	50

1) During continuous work with pH over 10 the temperature must not exceed 35 C 2) Flow of each element in a batch may vary +/-20%